package com.flashflexpro.tanksinbattle.utils;


import flex.messaging.io.SerializationContext;
import flex.messaging.io.amf.Amf3Output;

import java.io.*;

/**
 * @author gyang@brightcove.com
 */
public class DependencyUtil {

    public static byte[] getBytesFromFile(File file) throws IOException {
        InputStream is = new FileInputStream(file);

        // Get the size of the file
        long length = file.length();

        if (length > Integer.MAX_VALUE) {
            // File is too large
        }

        // Create the byte array to hold the data
        byte[] bytes = new byte[(int)length];

        // Read in the bytes
        int offset = 0;
        int numRead = 0;
        while (offset < bytes.length
               && (numRead=is.read(bytes, offset, bytes.length-offset)) >= 0) {
            offset += numRead;
        }

        // Ensure all the bytes have been read in
        if (offset < bytes.length) {
            throw new IOException("Could not completely read file "+file.getName());
        }

        // Close the input stream and return bytes
        is.close();
        return bytes;
    }


    public static byte[] getAmfBytesFromObject( Object u ) throws IOException {

        Amf3Output ai = new Amf3Output( SerializationContext.getSerializationContext() );
        ByteArrayOutputStream out = new ByteArrayOutputStream();
        ai.setOutputStream( out );
        ai.writeObject( u );
        ai.flush();

        out.close();
        ai.close();
        return out.toByteArray();
    }
    
    
}
